Circuit Description
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Variable Valve Timing (VVT) sensor is also known as camshaft position sensor.
VVT sensor LH consists of a core and a pick up coil. On the signal plate for VVT signal, there are three convex on its outer circumference and it is fixed to the camshaft timing gear. When the camshaft turns, the convex of the signal plate and the air-gap over the pick up coil will switch, and with this the magnetic field will change and generate electricity inside the pick up coil. In addition, VVT sensor LH adopts a sensor using a signal plate and a magnetic resistance element. By switching the air-gap of the signal plate and the sensor, ECM voltage will be converted to a rectangular move and output as a signal. Possible causes are:
- Open or short in VVT sensor circuit.
- Faulty VVT sensor (camshaft position sensor).
- Camshaft timing gear.
- ECM.